• Coloured initial 'O' and marginal inscription along the lower edge stating that it was written in 1272: 'Iste liber est scriptus anno 1272 . . .'., Tractatus de sphaera (index De sphera), in a mathematical and scientific miscellany

scientific texts of different dates with initials in red or blue, a few with pen-flourishing, and numerous charts and diagrams, and includes a calendar (ff. 26-31v). Initials in blue or blue. Paraphs in red. Diagrams in red and black. Tractatus

• Diagram., Tractatus de sphaera (index De sphera), in a mathematical and scientific miscellany

scientific texts of different dates with initials in red or blue, a few with pen-flourishing, and numerous charts and diagrams, and includes a calendar (ff. 26-31v). Initials in blue or blue. Paraphs in red. Diagrams in red and black. Tractatus

• Calendar page., Tractatus de sphaera (index De sphera), in a mathematical and scientific miscellany

scientific texts of different dates with initials in red or blue, a few with pen-flourishing, and numerous charts and diagrams, and includes a calendar (ff. 26-31v). Initials in blue or blue. Paraphs in red. Diagrams in red and black. Tractatus

• Diagrams of eclipses, with the earth in the centre and the sun in the outer orbit. In the upper diagram, labelled 'Eclipse of the moon', the earth casts its shadow on the moon, while in the diagram below, labelled 'Eclipse of the sun', the moon casts its shadow on the earth., Tractatus de sphaera (index De sphera), in a mathematical and scientific miscellany

scientific texts of different dates with initials in red or blue, a few with pen-flourishing, and numerous charts and diagrams, and includes a calendar (ff. 26-31v). Initials in blue or blue. Paraphs in red. Diagrams in red and black. Tractatus

• Diagrams of eclipses, with the earth in the centre and the sun in the outer orbit. In the upper diagram, labelled 'Eclipse of the moon', the earth casts its shadow on the moon, while in the diagram below, labelled 'Eclipse of the sun', the moon casts its shadow on the earth., Tractatus de sphaera (index De sphera), in a mathematical and scientific miscellany

scientific texts of different dates with initials in red or blue, a few with pen-flourishing, and numerous charts and diagrams, and includes a calendar (ff. 26-31v). Initials in blue or blue. Paraphs in red. Diagrams in red and black. Tractatus